Method of and means for sealing sleeves in the jackets of engine-cylinders.



6. L. SHEPPY'.

METHOD OF AND MEANS FOR SEALING SLEEVES IN THE .IIAGK'ETS 0F ENGINE CYLINDERS.

APPLICATION FILED IAN. I0, I9I?-.

1,285,43Q, Patented Nov. I9, 1918.

CHARLES L. SHEPPY, OF BUFFALO, NEW YORK, ASSIGNOR TO THE PIERCE-ARROW MOTOR CAR COMPANY, OF BUFFALO, NEW YORK.

METHOD OF AND MEANS FOR SEALING SLEEVES IN THE J'ACKETS OF ENGINE- CYLINDERS.

fipeoifloation of Letters Patent.

Patented Nov. 19, TWE.

Application filed January 10, 1917; Serial No. 141,727.

To all whom it may concern:

Be it known that I, CHARLES L. SHEPPY, a citizen of the United States, residing at Bufialo, in the county of Erie and State of New York, have invented a new and useful Improvement in Methods of'and Means for Sealing Sleeves in the Jackets of Engine- Cylinders, of- .which the following is a specification. I

This invention relates to a method of and means for sealing the joints between the in ner sleeves and the water jackets of the cylinders of internal combustion engines of that sort in which the cylinder is formed by a separate tube or sleeve of steel or other suitable metal secured in a jacket of suitable metal, such for instance as aluminum.

When the sleeve and jacket of these cylinders are made from different metals, such as steel and aluminum, which have different coehicients of expansion, much trouble has been experienced in making the joints between the sleeve and jacket so that they will remain tight and prevent leakage, on account of the difference in expansion and contraction of the two parts; Difficulty has also been experienced in multiple cylinder engines of this sort in which a plurality of cylinder sleeves are used in a single jacket casting, due to the fact that the casting is not as rigid in the direction of its width as in a lengthwise direction andwhen the cylinder sleeves are driven into the sleeve cavities of the casting the jacket castings frequently give in the direction of least resistance and are thus distorted. This further adds to the difliculty of making and keeping the joints between the sleeves and jacket tight.

The object of the invention is to provide an efficient and reliable method of and means which effectually seals the joints.

In the accompanying drawings Figure 1 is a longitudinal sectional elevation on line 1-1, Fig. 2 of an internal combustion engine cylinder in which the joints between the jacket and sleeve are sealed in accordance with this invention.

Fig. 2 is a fragmentary plan view thereof,

partly in horizontal section on line 2-2, Fig. 1.

Fig. 3 is an enlarged sectional elevation through the lower joint between the jacket and sleeve, indicating by dotted lines the application of the pressure device for forcing the sealing material into the joint.

Fig. at is an enlarged sectional elevation showing the upper joint.

Fig. 5 is an inside elevation of a fragment of the jacket showing the sealing grooves therein.

a modified construction.

A represents the water acket, B the inner sleeve, C the cylinder head of an internal combustion engine. These parts, except as to the means for sealing the joints between the sleeves and jacket may be of any usual or suitable construction, and may be made of any suitable materials. Preferably, the jacket and cylinder head are aluminum castings while the sleeves B are made of steel having suitable qualities of strength and durability. The jacket is provided at the upper and lower ends of the cavity for each innersleeve B with portions 10 and 11 having cylindrical'openings or bores in which the opposite ends of the inner sleeve fit, the sleeve, being, as usual, driven into place in the sleeve cavity of the jacket. The jacket forms a water chamber or space 12 around the sleeve. The sleeve is preferably provided with a circumferential flange 13 at its upper end .which is secured between an internal shoulder 13 at the upper end of the portion 10 of the jacket and the cylinder head C which is bolted or otherwise secured in place on the jacket, as usual. The upper end of the inner sleeve is thus rigidly held and prevented from movement relative to the jacket. The joint between the opposite end of the sleeve and the portion 11 of the and rendered water tight. Two sealing grooves 14 are shown for the joint at the upper end of the sleeve, these grooves being formed half in the outer surface of the sleeve and half in the inner surface of the part 10 of the jacket. Three sealing grooves 15 are shown for the lower joint, these grooves being preferably formed only in the inner surface of the part 11 of the jacket, thus leaving the cooperating surface of the inner sleeve cylindrical andsmooth to permit of the relative movement of the sleeve in the jacket. Any required number. of the sealing grooves, one or more, may be em-.

ployed for each of the joints. The sealing grooves 14 for the upper joint are connected at one side of the sleeve by a groove 16 wlth a filling hole 17, leading out through the' jacket, and at the opposite side of the sleeve the sealing grooves are preferably s mllarly connected with a vent hole 18 leading out through the jacket. The sealing grooves 15 for the other joint are similarly connected with filling and vent holes 19 and 20 respec tively. Each of the vent holes is closed by a screw or plug 21 of any suitable sort adapted to tightly close the vent hole. Each 'of the filling holes is preferably provided between its ends with a Valve seat or shoulder 22 and the portion of the filling hole located outwardly beyond this seat or shoulder is screw-threaded to receive a screw plug or valve 23 which has an inner end of comcal or other suitable shape .adapted to seat against the shoulder 22 when the screw is screwed in for tightly closing the filling hole. Each filling hole is provided with a branch filling passage 24 which leads from the hole at a point outwardly beyond the valve seat 22 to theexterior of the jacket and the outer end of this passage is screwthreaded or otherwise adapted for the connection therewith of a screw pump or other device, indicated by dotted lines at 25 in Fig. 3, for forcing sealing material into the filling hole and the sealing grooves connected therewith.

In the modified construction shown in Fig. 6, the filling passage 24L for the connection of the filling gun or device is formed by a hole in the screw plug or valve 23 itself and connects with the filling hole through one or more orifices 24 in the plug. In this construction the screw plug is unseated for filling the sealing grooves and is seated for closing the filling hole, as in the case of the first construction described.

Each joint is sealed in the following manner: j

The vent plug 21 isloosened or removed to permit the escape of air from the sealing grooves and the valve plug 23 is loosened or screwed off of the seat 22 of the filling hole, as shown in Fig. 3. A high pressure screw gun or other forcing device is then applied to the filling passage-24 or 24* and operated vto force the sealing compound into the sealand when the sealing material appears at this hole the plug 21 is screwed in to tightly close the vent hole. The pressure on the material is continued until the grooves are filled with the sealing material and there is no drop in pressure. The screw plug or valve 23 or 23' is then screwed onto its seat, thus closing the sealing grooves and retaining the sealing material under pressure in the grooves. The filling device is then removed. The sealing grooves can thus be filled with sealing material under the necessary pressure to insure an absolutely tight and reliable joint.

The sealing material can be of any suitable composition which is adapted to be forced under pressure into the sealing grooves and which will effectually seal the joints. Various different materials may be employed,.de-

pending on the duty required. In some cases a compound can be used that will solidify. In other cases a compound that will not become hard will be found better. Sleeves sealed as described can be removed and rescaled, or old sleeves can be rescaled and made tight.

I claim as my invention 1. The method of sealing the joints between the .inner sleeves and outer jackets of engine cylinders in which the sleeve and jacket have different coefficients of expansion and the ends of the sleeve fit in opposite openings in the jacket, consisting in forming a circumferential sealing groove between the sleeve and jacket at the joint and a connecting filling hole, filling said groove under pressure with a sealing material, and closing the filling hole of the groove while the pressure is maintained.

2. The method of sealing the inner sleeves in the water jackets of engine cylinders in which the sleeve and jacket have different coefficients of expansion, consisting in providing openings in the opposite ends of the jacket in which the ends of the sleeve fit, securing one end of the sleeve to the jacket to prevent relative movementof said end of the sleeve in the jacket, the opposite end of the sleeve being capable of movement in its opening due to expansion and contraction of the parts, providing circumferential sea-ling grooves between the opposing surfaces of 'the sleeve and the walls of said openings, and forcing a sealing material under pressure into said grooves.

3. The combination of the inner sleeve of a cylinder, an outer jacket surrounding said sleeve and having opposite openings in which the ends of said sleeve fit, said jacket being enlarged interiorly between Said openings to form a chamber around said sleeve, a groove being formed around the sleeve between the opposing surfaces of the sleeve and the wall of one of said openings, one of said parts having a filling hole connecting with said groove through which a sealing material is forced under pressure into said groove, and means for closing said filling hole and retaining the sealing material under pressure in said groove.

. 4. The combination of the inner sleeve of' a cylinder, an outer jacket surrounding said sleeve and having openings in its ends in which said sleeve fits, said jacket forming a chamber between its ends around the sleeve,

sealing groovesbeing formed around the sleeve between the opposing surfaces of the sleeve and the walls of said openings, said jacket having filling holes through which sealing material is forced into said grooves, and means for closing said filling holes and retaining a sealing material in said grooves.

5. The combination of the inner sleeve of a cylinder, an outer jacket surrounding said sleeve and having openings in its ends in which said sleeve fits, said jacket forming a chamber between its ends around the sleeve, means securing one end of the sleeveto the jacket to prevent relative movement of said end of the sleeve in the jacket, sealing grooves being formed around the sleeve between the opposing surfaces of the sleeve and the walls'of said openings, said jacket having filling holes through which sealing material is forced into said grooves, and means for closing said filling holes and-retaining a sealing material in said grooves.

6. The combination of the inner sleeve of a cylinder, a jacket surrounding said sleeveand having an opening in which the sleeve fits, a sealing groove being formed around the sleeve between the opposing surfaces of the sleeve and the wall of said opening, said jacket having filling and vent holes connectfits, a sealing groove being formed around,

the sleeve between the opposing surfaces of the sleeve and the wall of said opening, said jacket having a' filling hole connecting with said sealing groove and provided with a valve seat, a filling passage which connects with said hole outwardly beyond said valve seat and through which sealing material can be forced-into said hole and groove, and a valve arranged to be seated on said seat for closing said filling'hole and retaining the sealing material in'said groove.

8. The combination of the inner sleeve of a cylinder, a jacket surrounding said sleeve and having an opening in which the sleeve fits, a sealing groove being formed around the sleeve between the opposingsurfaces of the sleeve and the wall of said opening, said jacket having a filling hole connecting with said sealing groove and provided with a valve seat, a filling passage which connects -with said hole outwardly beyond said valve seat and through which sealing material can be forced into said hole and groove, and a plug which closes said filling hole. outwardly beyond its connection with said filling passage and is movable against said seat for retaining the sealing material in said groove. Witness my hand and seal this 8th day of January 1917.

- CHARLES LTSHEPPYT Witnesses:

JOHN C. TALco'rr, W. R. GORDON. 

